Fresh Watermelon is a delicious and refreshing fruit that is also healthy. It contains only 46 calories but is high in vitamin C, vitamin A and other healthy plant compounds. Watermelon has high water content and fiber that makes it hydrating and helps you feel full. It is also provides a healthy dose of potassium, magnesium and vitamins B1, B5 and B6. Watermelon is also high in carotenoids, such as beta-carotene and lycopene.